Simulations of the last interglacial and the subsequent glacial inception with the Planet Simulator

Computer Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

The Planet Simulator was used to perform equilibrium simulations of the Eemian interglacial at 125 kyBP and the glacial inception at 115 kyBP. Additionally, an accelerated transient simulation of that interval was performed. During this period the changes of Earth's orbital parameters led to a reduction of summer insolation in the northern latitudes. The model has been run in different configurations in order to evaluate the influence of the individual sub-models. The strongest reaction on the insolation change was observed when the atmosphere was coupled with all available sub-systems: a mixed-layer ocean and a sea-ice model as well as a vegetation model. In the simulations representing the interglacial, the near-surface temperature in northern latitudes is higher compared to the preindustrial reference run and almost no perennial snow cover occurs. In the run for the glacial inception, wide areas in mid and high northern latitudes show negative temperature anomalies and wide areas are covered by snow or ice. The transient simulation shows that snow volume starts to increase after summer insolation has fallen below a critical value. The main reason for the beginning glaciation is the locally reduced (summer) temperature as a consequence of reduced summer insolation. Therefore, a larger fraction of precipitation falls as snow and less snow can melt. That mechanism is amplified by the snow-albedo-feedback.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Simulations of the last interglacial and the subsequent glacial inception with the Planet Simulator does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Simulations of the last interglacial and the subsequent glacial inception with the Planet Simulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulations of the last interglacial and the subsequent glacial inception with the Planet Simulator will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1244733

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.